Splash always does a big refurb, and they always drain it.
The crane always goes up in september and jan for the christmas lights. And a couple years back they did a repainting of the turrets, so the crane was up A LOT.
Now that is the first time I've seen the moat drained. The rivers of america are well over due for a cleaning as well. That one's going to stink even more because there's more fish living in it. And they're not stocked with fish, they make their way through the canals.
But it's always fun to see the refurbs and how things are done. At the start of 09 it seemed like everything went under refurb. And tons of places got fresh coats of paint and such that weren't originally scheduled for. But with the bad turnout, it made it that much easier to get it all done.
And Disney does go out of it's way to protect the plants. But you gotta remember, a lot of the plantings in the flower beds were for the holidays. So they probably let the freeze take them over before going in and putting in the new selection. In 07 at DAK, they had massive heaters in the oasis to help keep things warm. They only opened up the left side until about 10-11am when they finally moved all the heaters out of the way. Granted the cold freeze only lasted a couple days, this year it lasted like a couple weeks.